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/*
* This file has been modified for the cdrkit suite.
*
* The behaviour and appearence of the program code below can differ to a major
* extent from the version distributed by the original author(s).
*
* For details, see Changelog file distributed with the cdrkit package. If you
* received this file from another source then ask the distributing person for
* a log of modifications.
*
*/
/* @(#)sunlabel.h 1.5 03/12/28 Copyright 1999-2003 J. Schilling */
/*
* Support for Sun disk label
*
* Copyright (c) 1999-2003 J. Schilling
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; see the file COPYING. If not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef howmany
#define howmany(x, y) (((x)+((y)-1))/(y))
#endif
#ifndef roundup
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
#endif
#define NDKMAP 8 /* # of sparc partitions */
#define NX86MAP 16 /* # if x86 partitions */
#define DKL_MAGIC 0xDABE /* magic number */
#define DKL_MAGIC_0 0xDA /* magic number high byte */
#define DKL_MAGIC_1 0xBE /* magic number low byte */
#define CD_DEFLABEL "CD-ROM Disc with Sun sparc boot created by genisoimage"
#define CD_X86LABEL "CD-ROM Disc with Sun x86 boot created by genisoimage"
/*
* Define a virtual geometry for the CD disk label.
* The current values are stolen from Sun install disks and do not seem to be
* a good idea as they limit the size of the CD to 327680 sectors which is less
* than 74 minutes.
* There are 84 minute CD's with 378000 sectors and there will be DVD's with
* even more.
*/
#define CD_RPM 350
#define CD_PCYL 2048
#define CD_APC 0
#define CD_INTRLV 1
#define CD_NCYL 2048
#define CD_ACYL 0
#define CD_NHEAD 1
#define CD_NSECT 640
/*
* NOTE: The virtual cylinder size on CD must be a mutiple of 2048.
* This is true if CD_NSECT is a multiple of 4.
*/
#define CD_CYLSIZE (CD_NSECT*CD_NHEAD*512)
#define V_VERSION 1 /* The VTOC version */
#define VTOC_SANE 0x600DDEEE /* Indicates a sane VTOC */
#define V_ROOT 0x02 /* Root partiton */
#define V_USR 0x04 /* Usr partiton */
#define V_RONLY 0x10 /* Read only */
/*
* The Sun sparc disk label (at offset 0 on a disk)
*/
struct sun_label {
char dkl_ascilabel[128];
struct dk_vtoc {
Uchar v_version[4]; /* layout version */
char v_volume[8]; /* volume name */
Uchar v_nparts[2]; /* number of partitions */
struct dk_map2 {
Uchar p_tag[2]; /* ID tag of partition */
Uchar p_flag[2]; /* permission flag */
} v_part[NDKMAP];
Uchar v_xxpad[2]; /* To come over Sun's alignement problem */
Uchar v_bootinfo[3*4]; /* info for mboot */
Uchar v_sanity[4]; /* to verify vtoc sanity */
Uchar v_reserved[10*4];
Uchar v_timestamp[NDKMAP*4];
} dkl_vtoc; /* vtoc inclusions from AT&T SVr4 */
char dkl_pad[512-(128+sizeof (struct dk_vtoc)+NDKMAP*8+14*2)];
Uchar dkl_rpm[2]; /* rotations per minute */
Uchar dkl_pcyl[2]; /* # physical cylinders */
Uchar dkl_apc[2]; /* alternates per cylinder */
Uchar dkl_obs1[2]; /* obsolete */
Uchar dkl_obs2[2]; /* obsolete */
Uchar dkl_intrlv[2]; /* interleave factor */
Uchar dkl_ncyl[2]; /* # of data cylinders */
Uchar dkl_acyl[2]; /* # of alternate cylinders */
Uchar dkl_nhead[2]; /* # of heads in this partition */
Uchar dkl_nsect[2]; /* # of 512 byte sectors per track */
Uchar dkl_obs3[2]; /* obsolete */
Uchar dkl_obs4[2]; /* obsolete */
struct dk_map { /* logical partitions */
Uchar dkl_cylno[4]; /* starting cylinder */
Uchar dkl_nblk[4]; /* number of blocks */
} dkl_map[NDKMAP]; /* logical partition headers */
Uchar dkl_magic[2]; /* identifies this label format */
Uchar dkl_cksum[2]; /* xor checksum of sector */
};
/*
* The Sun x86 / AT&T disk label (at offset 512 on a fdisk partition)
*/
struct x86_label {
struct x86_vtoc {
Uchar v_bootinfo[3*4]; /* unsupported */
Uchar v_sanity[4]; /* to verify vtoc sanity */
Uchar v_version[4]; /* layout version */
char v_volume[8]; /* volume name */
Uchar v_sectorsz[2]; /* # of bytes in a sector */
Uchar v_nparts[2]; /* # of partitions */
Uchar v_reserved[10*4];
struct dkl_partition {
Uchar p_tag[2]; /* ID tag of partition */
Uchar p_flag[2]; /* permission flag */
Uchar p_start[4]; /* starting sector */
Uchar p_size[4]; /* number of blocks */
} v_part[NX86MAP];
Uchar timestamp[NX86MAP][4];
char v_asciilabel[128];
} dkl_vtoc; /* vtoc inclusions from AT&T SVr4 */
Uchar dkl_pcyl[4]; /* # physical cylinders */
Uchar dkl_ncyl[4]; /* # of data cylinders */
Uchar dkl_acyl[2]; /* # of alternate cylinders */
Uchar dkl_bcyl[2];
Uchar dkl_nhead[4]; /* # of heads in this partition */
Uchar dkl_nsect[4]; /* # of 512 byte sectors per track */
Uchar dkl_intrlv[2]; /* interleave factor */
Uchar dkl_skew[2];
Uchar dkl_apc[2]; /* alternates per cylinder */
Uchar dkl_rpm[2]; /* rotations per minute */
Uchar dkl_write_reinstruct[2];
Uchar dkl_read_reinstruct[2];
Uchar dkl_extra[4*2]; /* for later expansions */
char dkl_pad[512-(sizeof (struct x86_vtoc)+4*4+14*2)];
Uchar dkl_magic[2]; /* identifies this label format */
Uchar dkl_cksum[2]; /* xor checksum of sector */
};
/*
* One x86 PC fdisk partition record.
*/
struct pc_pr {
Uchar pr_status; /* Boot status */
Uchar pr_head; /* Starting head # */
char pr_sec_cyl[2]; /* Starting sec+cyl # */
Uchar pr_type; /* Partition type */
Uchar pr_e_head; /* Ending head # */
char pr_e_sec_cyl[2]; /* Ending sec+cyl # */
char pr_partoff[4]; /* Partition start sector # */
char pr_nsect[4]; /* # of sectors in partition */
};
/*
* Flags and macros for above partition record.
*/
#define SEC_MASK 0x3F
#define GET_SEC(a) ((a) & SEC_MASK)
#define GET_CYL(a) ((((a) & 0xFF) >> 8) | (((a) & 0xC0) << 2))
#define STATUS_INACT 0 /* Marked non bootable */
#define STATUS_ACTIVE 0x80 /* Marked as bootable */
#define TYPE_FREE 0 /* Unused partition */
#define TYPE_DOS12 0x01 /* FAT12 fileystem */
#define TYPE_XENIX 0x02 /* XENIX root */
#define TYPE_XENIX2 0x03 /* XENIX usr */
#define TYPE_DOS16 0x04 /* FAT16 filesystem */
#define TYPE_XDOS 0x05 /* Extended DOS part */
#define TYPE_DOS4 0x06 /* FAT16 >= 32 MB */
#define TYPE_SOLARIS 0x82 /* Solaris x86 */
#define TYPE_SOLARIS_BOOT 0xBE /* Solaris boot */
#define TYPE_CDOS4 0xDB /* CPM */
/*
* The first sector on a disk from a x86 PC (at offset 0 on a disk)
*/
struct pc_part {
char bootcode[0x1BE]; /* Master boot record */
struct pc_pr part[4]; /* The 4 primary partitions */
Uchar magic[2]; /* Fixed at 0x55 0xAA */
};
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